Originally Posted by
laviation
According to planespotters.net, the 321s were originally given G-JZDx registrations, which in my opinion would've fitted with the fleet nicer. G-SUNB was G-JZDA, SUNC was JZDB, SUND was JZDC et cetera
Thats right. But this was before they took the ex Flyr aircraft which are now using the JZD registrations. This makes more sense and follows the rest of the 738s I suppose.